6.2
Maintenance
6.1.1 Maintenance intervals
Precautions
A. If the compressor is kept idle
Isolate the power supply.
Close the main air outlet valve.
Drain the water from the condensate system.
Close the inlet and outlet water valve. (applicable only
for water cooled compressors)
B. If the compressor is kept idle for more than 6
months
Follow the above steps.
Refer to the section “Preservation for long idle storage”.
Maintenance 6.1
Frequency Part Remarks
Daily
Oil level Check
MOS condensate Check
Warning / alarms Check
Condensate in AOS tank Check
Weekly
Pre filter ( air intake, cooler, control panel) Clean
Air filter element Clean *
2000 hours
Oil & after coolers - air cooled (External) Check & Clean
Oil filter Replace
Oil Sampling **
50 Hz motor - 2 pole grease Replace
4000 hours or every year
#
Pre filter ( air intake, cooler, control panel) Replace
Air filter element Replace
Oil – Air lube XD / Air lube FG Replace
Air-oil separator element – Air lube XD / Air lube FG Replace
50 Hz motor ( 4 pole ) grease Replace
60 Hz motor ( > 25HP ) grease Replace
Electrical connections Check
Return line sight glass / orifice / NRV Check & Clean
Return line strainer Check & Clean
8000 hours or every 2 years
#
Air-oil separator element - UT Synthetic Replace
Oil - UT Synthetic Replace
60 Hz motor ( ≤ 25HP ) grease Replace
Drive coupling element Replace
Pipe coupling element Replace
Intake valve kit Replace
Actuator kit Replace
MPV kit Replace
BDV kit Replace
Solenoid valve Replace
Safety valve Replace
MOS-ADV kit Replace
Control line filter-ADV kit Check & Replace
Nylon tubes Replace
Oil & after coolers - water cooled (External) Check & Clean
#- Whichever comes first * - As per air filter clog indicator **- For USA region only
NOTE
The above life time guidelines are applicable only to standard operating and regular maintenance conditions recommended in
this manual. In the event of changes in the conditions, consult ELGi.
Table 5. Maintenance intervals
Sl. No. Motor make Grease
1 ELGi ESSO Polyrex EPL
2 SIEMENS Unirex N3 ESSO
3 WEG MOBIL Polyrex EM
Table 7. Electric motor grease
Volume
ELGi Air Lube
UT Synthetic
ELGi Air Lube
FG
5 litres (1.3 gallons) 000998067 000998077
20 litres (5.3 gallons) 000998068 000998078
210 litres (55 gallons) 000998069 000998079
Table 6. Compressor oil
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